Ozone levels improving after a disastrous Friday

Ozone levels in the air are down this weekend (at least in Flanders and Brussels) compared to Friday, when the European alert level of 180 microgrammes per cubic metre of air had been exceeded in no fewer than 33 measuring stations across Belgium.

Michaël Torfs

Sat 04 Aug 15:28

Ozone is triggered by a combination of air pollution, very hot weather and intense sunshine. The poor air quality means that older people, children or those battling lung problems are advised to avoid physical efforts between roughly noon and 8PM. However, when ozone levels are really high like on Friday, even those who deem themselves to be in top shape are advised to avoid heavy physical exercise or sports.

Yesterday, ozone levels exceeded the alert level of 180 in 33 measuring stations. Sint-Pieters-Leeuw, near Brussels, had the highest 'score': 238. Neder-over-Heembeek and Haren, also close to the capital had 234 and 233. Twelve of the measuring stations showing soaring ozone levels were situated in Flanders, seven in Brussels.